@itwin/core-backend/lib/esm/ImageSourceConversion.js

iTwin.js backend components

/*---------------------------------------------------------------------------------------------
* Copyright (c) Bentley Systems, Incorporated. All rights reserved.
* See LICENSE.md in the project root for license terms and full copyright notice.
*--------------------------------------------------------------------------------------------*/
/** @packageDocumentation
 * @module Images
 */
import { ImageBuffer, ImageBufferFormat } from "@itwin/core-common";
import { IModelNative } from "./internal/NativePlatform";
/** Decode a [BinaryImageSource]($common) into an [ImageBuffer]($common).
 * Returns `undefined` if decoding fails, typically because the input was invalid.
 * @see [[imageSourceFromImageBuffer]] for the inverse conversion.
 * @public
 */
export function imageBufferFromImageSource(args) {
    const ret = IModelNative.platform.imageBufferFromImageSource(args.source.format, args.source.data, args.targetFormat ?? 255, false);
    if (!ret) {
        return undefined;
    }
    return ImageBuffer.create(ret.data, ret.format, ret.width);
}
/** Encode an [ImageBuffer]($common) into a [BinaryImageSource]($common).
 * Returns `undefined` if encoding fails, typically because the input was invalid.
 * @throws Error if the ImageBuffer is of [ImageBufferFormat.Alpha]($common).
 * @public
 */
export function imageSourceFromImageBuffer(args) {
    if (args.image.format === ImageBufferFormat.Alpha) {
        throw new Error("imageSourceFromImageBuffer cannot be used with alpha-only images");
    }
    return IModelNative.platform.imageSourceFromImageBuffer(args.image.format, args.image.data, args.image.width, args.image.height, args.targetFormat ?? 255, args.flipVertically ?? false, args.jpegQuality ?? 100);
}
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